Rhodora 27: 211 (1926). Type locality: USA, Massachusetts, Plymouth County, Wareham, 1924, C. A. Robbins (FH - lectotype). Lectotypification by Ahti (1993: 67).
Type locality: USA, Massachusetts, Plymouth County, Wareham, 1924, C. A. Robbins (FH - lectotype). Lectotypification by Ahti (1993: 67).